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A meshnetwork is a network topology in which each node (called a mesh node) relays data for the network. All nodes cooperate in the distribution of data in the network.
A meshnetwork can be designed using a flooding technique or a routing technique. When using a routing technique, the message is propagated along a path, by hopping from node to node until the destination is reached. To ensure all its paths' availability, a routing network must allow for continuous connections and reconfiguration around broken or blocked paths, using self-healing algorithms. A meshnetwork whose nodes are all connected to each other is a fully connected network. Meshnetworks can be seen as one type of ad hoc network. Mobile ad hoc networks (MANET) and meshnetworks are therefore closely related, but MANET also have to deal with the problems introduced by the mobility of the nodes.
The self-healing capability enables a routing based network to operate when one node breaks down or a connection goes bad. As a result, the network is typically quite reliable, as there is often more than one path between a source and a destination in the network. Although mostly used in wireless...

...A Novel Architecture to Evaluate Routing Protocols for Multi-hop Ad-hoc Networks
Lan Tien Nguyen
School of Information Science Japan Advanced Institute of Science and Technology Email: lannt@jaist.ac.jp
Razvan Beuran
Hokuriku Research Center National Institute of Information and Communications Technology Email: razvan@nict.go.jp
Yoichi Shinoda
School of Information Science Japan Advanced Institute of Science and Technology Email: shinoda@jaist.ac.jp
Abstract—In this paper, we present AEROMAN (Architecture to Evaluate Routing PrOtocols for Multi-hop Ad-hoc Networks) which is designed and implemented for evaluation of routing protocols for multi-hop wirelessnetworks. AEROMAN uses QOMET, a wireless link emulation tool, to compute parameters of wireless links, such as bandwidth, delay, packet loss rate, in contention-free conditions. In order to take into account the properties of contention-based media access for wireless channel, AEROMAN uses an Adaptive Trafﬁc (AT) model to emulate the sharing feature of CSMA/CA mechanism in IEEE 802.11. The evaluations show that the AEROMAN with AT model effectively captures the characteristics of wireless communications. Several experiments using OLSR as routing protocol with different routing metrics are performed in order to illustrate the main features and usability of AEROMAN. Index Terms—emulation, modeling,...

...Introduction
Wirelessmeshnetworks (WMNs) are dynamically self-organized
and self-configured, with the nodes in the network automatically
establishing an ad hoc network and maintaining the
mesh connectivity. WMNs are comprised of two types of
nodes: mesh routers and mesh clients. Other than the routing
capability for gateway/bridge functions as in a conventionalwireless router, a mesh router contains additional routing
functions to support mesh networking. Through multi-hop
communications, the same coverage can be achieved by a
mesh router with much lower transmission power. To further
improve the flexibility of mesh networking, a mesh router is
usually equipped with multiple wireless interfaces built on
either the same or different wireless access technologies. In
spite of all these differences, mesh and conventional wireless
routers are usually built based on a similar hardware platform.
Mesh routers have minimal mobility and form the mesh
backbone for mesh clients. Thus, although mesh clients can
also work as a router for mesh networking, the hardware platform
and software for them can be much simpler than those
for...

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What are the reasons FHP Wireless is having difficulty in getting sales and revenues?
FHP Wireless is has difficulty in getting sales and revenues because they are having a difficult time finding the right customers. They also don’t really have solid proof of their product working.
Their product would be helpful in warehouses and factories, casinos, hospitals, and college campuses. However, these customers find I too expensive or difficult to use the product.
Their product is also more expensive to install compared to installations of hot spots. People would rather go with what they know.
FHP Wireless can’t sell to the public because at this time most laptops do not have wireless. They need special wireless cards to add. There are also no smartphones around.
Another problem is that there are no companies that have the same functions of a metro-level Wi-Fi value chain. It would be difficult to get existing providers to support them because FHP Wireless might threaten them. There is also no one to install and use it.
How is FHP’s solution differentiated from customers’ other alternatives?
FHP’s solution differentiates from customers’ other alternatives in that it requires less backhaul. It needs one backhaul for every 30-50 nodes while in a Hotspot, it needs a backhaul for every single node. Per node, it has a higher cost per node. In the long run, the FHP...

... Present energy meter reading is a tedious and an expensive affair as it requires manual collection of reading which is erroneous.Automatic Electric Meter reading is one method reading and processing data automatically with computer and communication. It not only may relieve reading person's labor intensity, reduce the reading mistake, but also has the advantage of high speed and good real-time. The project of the wireless Electric Meter reading for wireless communication technology completes the design of automatic Electric Meter reading system. There the data can be interpreted and may be even compared to data from other wirelessly connected devices. Through researching the characteristic of main wireless communication protocol, ZigBee is chosen as lower layer communication protocol. ZigBee is a specification for a suite of high level communication protocols using small, low-power digital radios based on an IEEE 802 standard for personal area networks. The standard of ZigBeeis optimized for low data rate, low power consumption, security and reliability. Wireless energy meter using ZigBee is very useful for accurate energy billing apart from intelligent load shedding and theft detection.
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CHAPTER 1
INTRODUCTION
Electricity is the driving force behind the development of any country. With the rapid increase in residential, commercial, and...

...Bead Bar Network Paper
University of Phoenix Online
Bead Bar Network Paper
The Bead Bar is a company that allows customers to make their own jewelry. The company consists of many branches throughout the United States, franchises, and cruise ship contracts. The Bead Bar has grown exponentially since the building of the first studio in New Canaan, Connecticut. Due to the growth of the business, the company’s current system of processing and storing information is grossly outdated. The Bead Bar has hired a consultant to develop a network that can satisfy the wishes of each member of the senior staff (Malaga, 2005).
This paper will detail the network needs of the Bead Bar. The requests and concerns of the Bead Bar senior staff have been taken into consideration when creating this proposal. These requests and concerns have been addressed, providing the company with a highly efficient and cost-effective network system that can easily be updated as the company continues to grow.
Background
The Bead Bar is a thriving company with many branches and franchises. Malaga states, “Along with the original, there are now two studios in New York City, one on Long Island, one in Washington, D.C., and one in Boston, Massachusetts”. The franchises sell equipment to potential bead studio companies. These franchises operate in Missouri, Illinois, California, Washington, and Florida. The company also has a division...

...channel assignments in cognitive radio networks
Jie Wu a, Ying Dai a,⇑, Yanchao Zhao a,b
a
b
Department of Computer and Information Sciences, Temple University, Philadelphia, PA 19122, United States
State Key Lab of Novel Software, Department of Computer Science and Technology, Nanjing University, PR China
a r t i c l e
i n f o
Article history:
Received 5 January 2012
Received in revised form 20 October 2012
Accepted 23 October 2012
Available online 5 November 2012
Keywords:
Channel assignment
Cognitive radio networks
Dynamic spectrum access
List edge coloring
Localized algorithms
a b s t r a c t
Cognitive radio networks (CRNs) promise to be the next generation of the key enabling technology that
enables dynamic spectrum access (DSA). The channel assignment (CA) problem is one of the most important
issues in CRNs, with the objective of satisfying the interference constraints, and maximizing the number
of nodes with channels assigned. In this paper, our goal is to design highly-efﬁcient and localized protocols for CA. In addition, we want to maximize node connectivity after CA, which is important for packet
delivery. To this end, we design two basic algorithms and an advanced algorithm framework. Within this
framework, we can change the edge priority in CA to meet different requirements. Simulation results
show that the proposed framework is fast (two rounds of communication among nodes,...